I'm still trying to understand what the status bar is telling me and reconcile the information presented by the status bar vs the switch position.
If the mobile data switch (in the notification screen) is on, but 3g is not displayed in the status bar, is 3g really on?
Right now I'm in a wifi environment. Wifi is on and the status bar shows the wifi signal, but no 3g symbol.
The mobile data switch is on, but 3g only shows in the status bar when I turn off wifi. Alternatively, if I leave the wifi environment, JD switches off wifi and the 3g symbol appears in the status bar.
Does that indicate that 3g becomes operational when wifi is disabled or out of wifi range? I suppose this is an Android managed thing?
That seems consistent with what I've seen. Yes, JD turns wifi on and off per my setup, and I use locations too.
I didn't know if the status bar reflected the true status of the radios or if there was only so much room up there and some stuff could be on but not show. So regardless if the 3g switch is on, when in wifi and 3g is NOT displayed in the status bar, 3g is off (or standby... whatever).
I've found that there seems to be a lot of assumptions made by the programmers of various apps (such as JD) regarding users knowledge of Android and how it controls the radios. Things could be explained a bit better which would help me understand how the phone is managing the radios and how apps like JD function to guard battery power. I like to know what the options I select are doing vs enabling various options and just hoping they do something productive.
The 3G indicator in the statusbar indicates 2 things - that 3G is enabled and that you're getting a 3G signal. No matter what you do, if you're not receiving a 3G signal the indicator will be off. Conversely, if you're receiving a 3G signal but 3G is disbled, you also won't get the 3G indicator in the statusbar.
Thanks. The status bar 3g info is starting to make sense to me now that I'm beginning to understand what Android is doing with radio control.
So if the 3g switch is on but there is no 3g indicator in the status bar, either I'm not getting a 3g signal or 3g is disabled by either Android or an app. Am I understanding correctly now?
Ok thanks. The status bar is the true indication of functional 3g service, regardless of switch position. Good to know.
What do the signal bars in the status bar represent, beside the 3g symbol (or wifi symbol, whichever is displayed)? The manual just calls it signal strength without being specific as to what signal it is. I assume it's cell tower signal strength.
Yes, you can look at settings/about phone/status to give signal strength. Some apps may display it.